Malicious PDF — malware analysis report

Static analysis result for SHA-256 5480411f8f42cd6e…

MALICIOUS

PDF

98.5 KB Created: 2021-03-18 13:37:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 6b77ec6a107f1d544f7416e3bbadb68f SHA-1: 9c2f98286749285cd1183197bf33edd0b406daed SHA-256: 5480411f8f42cd6ef0418c985f9a44447ef1c07c66ce1e0e1c39e656bbc016c9
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://xezojetit.ru/wix?keyword=the+wright+brothers+first+flight PDF link annotation
    • http://bonboxstudio.com/33062483136v77e5.pdfIn PDF document text
    • http://sejerodetupumil.medianewsonline.com/daymond_john_powershift_book_tour.pdfIn PDF document text
    • http://bagomebefekixob.getenjoyment.net/42565056361.pdfIn PDF document text
    • http://hdvideo.design/829944579486tyho.pdfIn PDF document text
    • http://kakadari.iblogger.org/how_to_create_a_logic_model_in_google_docs.pdfIn PDF document text
    • http://marinarus.space/pitbull_dog_for_sale_in_californiae4kh0.pdfIn PDF document text
    • http://feedbacrnz.space/jazexezemevisowinakf3sh5.pdfIn PDF document text
    • http://wojurimaxab.mywebcommunity.org/data_science_para_negcios_livro.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/9ed249aa-4624-45de-bfd4-87920d0aa3b3/xovebofegabajotakegedigi.pdfIn PDF document text
    • https://68e1e3d4-268d-49bc-a8aa-b119cb10fea7.filesusr.com/ugd/3ceeb9_8696d6ca125a43289d7795ee8c64850d.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/65326031-7fe0-4315-8cf2-6068097de531/love_story_lyrics_video_song_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5697c5e6-f568-446e-9a34-208fe29ba7b9/logitech_k400_plus_wireless_keyboard_price_in_india.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e852d1d9-c322-470d-a984-db3e3c83acab/how_to.learn_forex.pdfIn PDF document text
    • https://26577e91-18e8-42c3-8e85-49dcca1d6605.filesusr.com/ugd/195787_b2f48e785c5a48b9b41a54cc2bbc3aed.pdf?index=trueIn PDF document text
    • http://zepuwiz.atwebpages.com/rugeluxavewege.pdfIn PDF document text
    • http://loxeputogojew.rf.gd/the_monkees_daydream_believer_lyrics_meaning.pdfIn PDF document text
    • http://sojonowiwexus.rf.gd/hyperboles_in_books.pdfIn PDF document text
    • http://vejawogi.rf.gd/ligedumiboxawifage.pdfIn PDF document text
    • http://rajusesozawan.rf.gd/volvo_xc90_owners_manual_uk.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5d50e0c9-7df7-4f72-9f0d-5582e7bf8b4f/83171747686.pdfIn PDF document text
    • https://77047a80-9f17-4504-a563-a097c25ca12e.filesusr.com/ugd/5c8b2f_4c8ebce0d4f540db9d03a32995e721bf.pdf?index=trueIn PDF document text
    • http://bifiwapaz.onlinewebshop.net/60970968045.pdfIn PDF document text
    • https://dc58184e-bbba-402a-8e08-a55d552c8f3f.filesusr.com/ugd/0ebc1f_4b511a4ef8c34c2faeed0b1a58612343.pdf?index=trueIn PDF document text
    • https://0bc2ebcf-5b85-435c-8290-6c6350a165f2.filesusr.com/ugd/ee98f5_83991d605f83434a8f2c35191d67b578.pdf?index=trueIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000145a3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x145A3 5000 bytes
SHA-256: 80e9565d18383a3a4300717f633867d85759ea5f1cca1a909a65641975b3802d
font_01_sfnt_off000156ba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x156BA 11288 bytes
SHA-256: e804ce3d7d8c0ba6ae05f3b86cd09e11bfb7627e6fe57c50d57f4bcd3236614e

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